v3.0: The Cascade — end-to-end goals-to-tasks flow

Add /project and /monthly skills to complete the cascade chain from
3-year vision through daily tasks. Add agent memory, model hints,
agent team workflows, and cascade context surfacing across all skills.

New skills:
- /project (new, status, archive) — bridge between goals and daily tasks
- /monthly — roll up weekly reviews, check quarterly milestones

Agent upgrades:
- memory: project on all 4 agents for cross-session learning
- Agent team workflow in /weekly for parallel reviews

Skill enhancements:
- /daily: cascade context surfacing (ONE Big Thing, project next-actions)
- /weekly: project progress table, agent team coordination
- /goal-tracking: project-aware progress, orphan goal detection
- /onboard: auto-discover and summarize active projects
- model: sonnet on goal-tracking, obsidian-vault-ops, push, onboard

Infrastructure:
- session-init.sh surfaces priorities, project count, review staleness
- settings.json adds cp/mv permissions for project archiving

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vault-template/.claude/agents/weekly-reviewer.md

@@ -3,6 +3,7 @@ name: weekly-reviewer
 description: Facilitate comprehensive weekly review process. Analyze past week's daily notes, calculate goal progress, and help plan next week. Use for Sunday/Monday weekly reviews.
 tools: Read, Write, Edit, Glob, Grep, TaskCreate, TaskUpdate, TaskList
 model: sonnet
+memory: project
 ---
 
 # Weekly Reviewer Agent